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1 <?xml version="1.0" encoding="utf-8"?> |
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2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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3 <!-- This component and the accompanying materials are made available under the terms of the License |
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4 "Eclipse Public License v1.0" which accompanies this distribution, |
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5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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6 <!-- Initial Contributors: |
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7 Nokia Corporation - initial contribution. |
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8 Contributors: |
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9 --> |
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10 <!DOCTYPE task |
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11 PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd"> |
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12 <task id="GUID-48B61662-0A11-4356-9882-7523B04FFD96" xml:lang="en"><title>Changing |
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13 Passphrase</title><shortdesc>This section explains how to change the passphrase. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> |
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14 <context><p>The following steps explain the process of changing the passphrase:</p></context> |
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15 <steps id="GUID-16DDA72F-9BC5-52FB-A3C6-874815ABF9FC-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-2"> |
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16 <step id="GUID-89755D62-9A44-5F07-9035-6AA97F701C0C-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-2-1"><cmd>Create a file system |
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17 session using an <codeph>RFs</codeph> object. </cmd> |
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18 </step> |
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19 <step id="GUID-6A14EBD6-AF2D-5CE8-A232-F04B717CA0B3-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-2-2"><cmd/> |
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20 <info>Create an object of type CUnifiedKeyStore using <xref href="GUID-818689D6-EB99-382E-A435-D9C6C5D464DE.dita#GUID-818689D6-EB99-382E-A435-D9C6C5D464DE/GUID-C7A96153-4179-3B3F-878D-1EAA64A98D39"><apiname>CUnifiedKeyStore::NewL()</apiname></xref> or <xref href="GUID-818689D6-EB99-382E-A435-D9C6C5D464DE.dita#GUID-818689D6-EB99-382E-A435-D9C6C5D464DE/GUID-217FBB3B-CEF5-36F2-A612-EDDA0982053C"><apiname>CUnifiedKeyStore::NewLC()</apiname></xref>. </info> |
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21 </step> |
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22 <step id="GUID-C8F104CE-E857-5615-B847-E3A33EAF7481-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-2-3"><cmd/> |
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23 <info>Initialize the member functions and keystore using the asynchronous |
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24 function <xref href="GUID-818689D6-EB99-382E-A435-D9C6C5D464DE.dita#GUID-818689D6-EB99-382E-A435-D9C6C5D464DE/GUID-6C5D732C-1FD1-3EF0-AC90-87690F891B8D"><apiname>CUnifiedKeyStore::Initialize()</apiname></xref>. </info> |
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25 </step> |
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26 <step id="GUID-6CF7703F-8CAC-5DC6-9F43-7E2EE3F39895-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-2-4"><cmd/> |
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27 <info>Obtain the authentication object of a key using the <xref href="GUID-7AE17C42-BAD8-3BE9-88A9-D0B066D171F2.dita#GUID-7AE17C42-BAD8-3BE9-88A9-D0B066D171F2/GUID-431CEFD1-5469-33B0-B21B-A535536CE40C"><apiname>CCTKeyInfo::Protector()</apiname></xref> function.</info> |
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28 </step> |
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29 <step id="GUID-6CF7703F-8CAC-5DC6-9F43-7E2EE3F39895-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-2-5"><cmd/> |
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30 <info>Invoke the <xref href="GUID-171BE947-E0D2-3049-85BB-FE2664D3777D.dita"><apiname>ChangeReferenceData()</apiname></xref> function for the |
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31 authentication object obtained. The keystore prompts the user to enter the |
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32 old and new passphrases.</info> |
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33 </step> |
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34 </steps> |
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35 <result><p>The passphrase is changed for the selected key, if the old passphrase |
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36 is entered correctly.</p> </result> |
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37 <example id="GUID-C2150584-293D-50CE-8DDC-19B4D55D8B0B-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-4"><title>Example</title> <p>The |
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38 following code snippet shows how to set use policy for a key. </p> <codeblock id="GUID-FAD1C292-8E42-5348-B975-3CBA7E8D2820-GENID-1-8-1-23-1-1-8-1-5-1-5-1-5-1-4-1-9-1-3-4-3" xml:space="preserve">// Create a file system session object |
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39 RFs iFs; |
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40 CleanupClosePushL(&iFs); |
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41 |
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42 |
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43 ... |
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44 |
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45 |
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46 // Initialise the keystore and member functions |
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47 CUnifiedKeyStore* keyStore = CUnifiedKeyStore::NewL(fs); |
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48 keyStore->Initialize(iStatus); //iStatus is a TRequestStatus object |
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49 |
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50 |
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51 ... |
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52 |
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53 |
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54 |
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55 // Change the passphrase |
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56 void ChangePassphraseL(CCTKeyInfo& aKey) |
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57 { |
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58 MCTAuthenticationObject* authObject = aKey.Protector(); |
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59 if (authObject == NULL) |
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60 User::Leave(KErrNotSupported); |
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61 |
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62 authObject->ChangeReferenceData(iStatus); |
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63 iState = EChangePassphrase; |
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64 SetActive(); |
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65 } |
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66 |
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67 |
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68 // Clean up |
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69 CleanupStack::PopAndDestroy(); // iFs</codeblock> </example> |
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70 </taskbody></task> |